We have never before had a problem with this, but we've had a very wet and humid 2 weeks here in GA, and the end result is mold all over the inside walls of my 4X6 hen house. My 9 chickens only sleep in it at night, and free-range all day long. I do not have electricity at the coop, but can run an extension cord down there, if need be. My first idea is a water/bleach solution to spray the walls with. Would that be safe, if I do it in the morning after they leave, and air it out all day? I also thought about rubbing DE all over the walls. Would that dry out and kill the mold?